[stable7] Exclude group from shares dropdown broken

[PVince81]

Steps to reproduce

1. Create a group in the users page
2. Open admin page
3. Scroll down to "Exclude groups from sharing"
4. Tick checkbox
5. Open dropdown

Expected result

Dropdown opens

Actual result

Dropdown does not open.

Versions

Works in OC 7.0.2 but broken on stable7.

I've bisected this and it comes down to this commit from @jancborchardt 30cc4b9

It is very strange how a simple overflow can mess up multiselect.

I'll try and find a compatible solution for multiselect.

[PVince81]

@MTRichards @craigpg set to next sprint, sev2-high as it makes it impossible to use the "exclude sharing from groups feature".

Note: this is only on stable7 so it must be fixed for OC 7.0.3.

[PVince81]

I noticed that if you delete the previous admin sections to make the multiselect appear on the first page (without scrolling), then the multiselect works correctly.
Possibly something broken in its offset calculation.

[jancborchardt]

Ugh - that's indeed strange. Sorry it didn't come up during testing. We definitely need the overflow so that the external storage and network drive functions are usable.

Thanks for looking into fixing multiselect. Cc @icewind1991 cause he wrote multiselect.js

[MTRichards]

Ok, thanks @PVince81

[MTRichards]

I noticed this too, by the way. Had this problem last week with the Sept 4 daily stable 7 build.

[craigpg]

@PVince81... making this a gold-ticket

[PVince81]

The fix is already here: #10968